Sr. No.	Recognized Fault	Probable Cause	Proposed Treatment	Hot Line Bending	Drape Forming	Vacum Forming	Free Blown
	A	B	C	D	E	F	G
1	Apparent bubbles in sheet	Moisture content too high	Pre-drying	+	+	+	+
2		Working temp. too high	Decrease working temp.	+		+	+
3	Hair fissures, fragile part	Part overheated	Decrease heating period			+	+
4		Mold under-heated	Increase mold temp.			+
5		Late extraction of part	Diminish cooling cycle			+
6		Vacum speed too high	Reduce vacum rate			+
7		Mold corners too sharp	Round sharp corners			+
8		Basic sheet size too small	Increase sheet size			+
9	Webbing	Erratic heating	Prevent hot or cold spots			+
10		Mold lead inadequate	Check spacing-min. depth x 2			+
11		Vacum speed too high	Reduce vacume rate			+
12		Basic sheet size too large	Clamp/mold spacing <50mm			+
13	Blurred or partial detailing	Vacum too weak	Seal leaks/add vacum holes			+
14		Sheet rigid, under-heated	Extend heating period/temp.			+
15	Product sticks to mold	Mold overheated	Decrease mold temperature			+
16		Product release delayed	Shorten release period			+
17		Draft angle too steep	Enlarge draft angle up to 4-6°			+
18	Marked zones on product	Irregular finish of mold	Treat mold to consistent finush			+
19		Suction holes misplaced	Install new, better placed holes			+
20		Sheet overheated	Decrease heating period/ temp.	+	+
21	Exterior flaws/ roughness	Dirt/ grime on sheet / mold	Wipe/Vacum-clean mold/sheet		+	+
22		Suction holes misplaced	Install new, better placed holes			+
23	Inconsistent shape of part	Mold/ brace under-heated	Extend pre-heat of mold/brace			+
24		Irregular heating/ cooling	Prevent drafts, fix faulty heater	+		+	+
25	Product release delayed	Shorten release period	Shorten release period		+